Kazuhiro Ouchi
VFD command test program
Diff: main.cpp
- Revision:
- 1:05518314979e
- Parent:
- 0:b2dddd322c12
--- a/main.cpp Sun Oct 02 12:01:29 2011 +0000
+++ b/main.cpp Mon May 02 13:57:58 2016 +0000
@@ -52,9 +52,10 @@
#include "mbed.h"
Serial pc(USBTX, USBRX);
+LocalFileSystem local("local");
// VFD DATA PORT
-BusInOut DATA(p5, p6, p7, p8, p9, p10, p11, p12);
+BusOut DATA(p5, p6, p7, p8, p9, p10, p11, p12);
// __
// Write Signal (WR)
DigitalOut WR(p14);
@@ -72,94 +73,44 @@
DigitalIn INT(p13);
// LED Status
-DigitalOut led1(LED2);
-DigitalOut led2(LED3);
-DigitalOut led3(LED4);
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
const uint8_t HIGH = 1;
const uint8_t LOW = 0;
-
const uint16_t MAX_ADDRESS = 0x01fff;
+FILE *fp;
+char in_filename[] = "/local/rom1.bin";
void send_cmd(uint8_t cmd)
{
- // LED ON
- led1 = HIGH;
-
- // C/D SET HIGH
- CD = HIGH;
- wait_us(1);
-
- // CS SET LOW
- CS = LOW;
- wait_us(1);
-
- // WR SET LOW
- WR = LOW;
- wait_us(1);
-
- // COMMAND SET
- DATA = cmd;
- wait_us(1);
-
- // WR SET HIGH
- WR = HIGH;
- wait_us(1);
-
- // CS SET HIGH
- CS = HIGH;
- wait_us(1);
-
- // LED OFF
- led1 = LOW;
+ CD = HIGH; // C/D SET HIGH
+ DATA = cmd; // COMMAND SET
+ CS = LOW; // CS SET LOW
+ WR = LOW; // WR SET LOW
+ wait_us(2); // wait 2us
+ WR = HIGH; // WR SET HIGH
+ CS = HIGH; // CS SET HIGH
+ wait_us(4); // wait 4us
return;
}
void send_data(uint8_t data)
{
- // LED ON
- led2 = HIGH;
-
- // C/D SET HIGH
- CD = LOW;
- wait_us(1);
-
- // CS SET LOW
- CS = LOW;
- wait_us(1);
-
- // WR SET LOW
- WR = LOW;
- wait_us(1);
+ CD = LOW; // C/D SET HIGH
+ DATA = data; // DATA SET
+ CS = LOW; // CS SET LOW
+ WR = LOW; // WR SET LOW
+ wait_us(2); // wait 2us
+ WR = HIGH; // WR SET HIGH
+ CS = HIGH; // CS SET HIGH
+ wait_us(4); // wait 4us
- // DATA SET
- DATA = data;
- wait_us(1);
-
- // WR SET HIGH
- WR = HIGH;
- wait_us(1);
-
- // CS SET HIGH
- CS = HIGH;
- wait_us(1);
-
- // LED OFF
- led2 = LOW;
-
- return;
-}
-
-// Write/Read address is automatically incremented (00H)
-void cmd_00H(){
- send_cmd(0);
- return;
-}
-
-void cmd_01H(){
- send_cmd(1);
return;
}
@@ -172,21 +123,15 @@
return;
}
-// Data Write/Read(02H,03H);
-void write_display_data(uint8_t data){
- send_cmd(2); // 04H
- send_data(data);
-
- return;
-}
-
-// 04H,05H: Setting address of Write-Read
+// 04H,05H,02H: Setting address of Write
void set_write_read_address(uint16_t address){
send_cmd(4); // 04H: Setting lower address of Write-Read
- send_data((uint8_t)(address && 0x0ff)); // mask upper address
+ send_data((uint8_t)(address & 0x0ff)); // mask upper address
send_cmd(5); // 05H: Setting upper address of Write-Read
- send_data((uint8_t)(address >> 8)); // 8bit shift
+ send_data((uint8_t)(address >> 8)); // 8bit shift
+
+ send_cmd(2); // 02H: Data Write
return;
}
@@ -194,7 +139,7 @@
// 07H,08H: Setting address display started
void set_disp_start_address(uint16_t address){
send_cmd(7); // 07H: Setting lower address display started
- send_data((uint8_t)(address && 0x0ff));
+ send_data((uint8_t)(address & 0x0ff));
send_cmd(8); // 08H: Setting upper address display started
send_data((uint8_t)(address >> 8));
@@ -204,29 +149,84 @@
// TEST PATTERN
void test_pattern(){
- uint8_t d = 0;
+ led1 = 1;
+ set_disp_start_address(0); // Display address: 000000H
+ led1 = 0;
- //cmd_00H(); // Write/Read address is automatically incremented
-
- luminance_adjustment(8); // 51.9%
+ led2 = 1;
+ luminance_adjustment(0x0f); // 100%
+ led2 = 0;
- set_write_read_address(0); // Start address: 000000H
-
- set_disp_start_address(0); // Display address: 000000H
+ for (uint16_t d = 0; d < 256 ; d++){
+ led3 = 1;
+ set_write_read_address(0); // Start address: 000000H
+ led3 = 0;
- for (uint16_t i = 0; i < MAX_ADDRESS; i++){
- write_display_data(d++);
- if (d > 255) { d = 0; }
+ for (uint16_t i = 0; i < MAX_ADDRESS; i++){
+ led4 = 1;
+ send_data(d);
+ led4 = 0;
+ }
}
return;
}
+void test_datafile(){
+ if ( NULL == (fp = fopen( in_filename, "r" )) ) {
+ pc.printf("File open error.\n");
+ led1 = HIGH;
+ return;
+ }
+
+ led1 = 1;
+ set_disp_start_address(0); // Display address: 000000H
+ led1 = 0;
+
+ led2 = 1;
+ luminance_adjustment(0x0f); // 100%
+ led2 = 0;
+
+ led3 = 1;
+ set_write_read_address(0); // Start address: 000000H
+ led3 = 0;
+
+ char d[8]; // 1char 8byte buffer
+ int char_cnt = 0;
+
+ // 8byte = 1CHAR
+ while(fgets(d, 8, fp) != NULL && char_cnt < 10) {
+ for (int byte_num = 0; byte_num < 8 ; byte_num++){ // byte
+ pc.printf("d[%d]:%02x ",byte_num,d[byte_num]);
+ uint8_t a = 0;
+ for (int bit_num = 7; bit_num >= 0; bit_num--){ // bit
+ if ((d[byte_num] & 0x80) != 0) {
+ a = a + (2 ^ bit_num);
+ }
+ d[byte_num] = d[byte_num] << 1;
+ pc.printf("a:%02x d:%02x ",a,d[byte_num]);
+ }
+ if ((d[byte_num] & 0x80) != 0) a++;
+
+ led4 = 1;
+ pc.printf("A:%02x ",a);
+ send_data(a);
+ led4 = 0;
+
+ for (int e = 0; e < 7 ; e++) send_data(0);
+ }
+ char_cnt++;
+ }
+ fclose(fp);
+
+ return;
+}
+
void blink_LED() {
- for (int i = 0 ; i < 10 ; i++) {
- led3 = 1;
+ for (int i = 0 ; i < 5 ; i++) {
+ led4 = 1;
wait(0.2);
- led3 = 0;
+ led4 = 0;
wait(0.2);
}
return;
@@ -237,6 +237,7 @@
led1 = LOW;
led2 = LOW;
led3 = LOW;
+ led4 = LOW;
CS = HIGH;
WR = HIGH;
@@ -247,7 +248,9 @@
blink_LED();
// TEST
- test_pattern();
+ //test_pattern();
+
+ test_datafile();
// END Sign
blink_LED();